CVE-2024-39837 – github.com/mattermost/mattermost-server

Package

Manager: go
Name: github.com/mattermost/mattermost-server
Vulnerable Version: =9.9.0 || >=9.9.0 <9.9.1 || >=9.5.0 <9.5.7

Severity

Level: Low

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00109 pctl0.2991

Details

Mattermost did not properly restrict channel creation Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly restrict channel creation which allows a malicious remote to create arbitrary channels, when shared channels were enabled.

Metadata

Created: 2024-08-01T15:32:23Z
Modified: 2025-07-25T15:45:57Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/08/GHSA-vvpg-55p7-5h8w/GHSA-vvpg-55p7-5h8w.json
CWE IDs: ["CWE-284"]
Alternative ID: GHSA-vvpg-55p7-5h8w
Finding: F039
Auto approve: 1